#include <iostream>
#include <winsock2.h>

int main(void){
  
	using namespace std;
    WSADATA wsaData;
    if(WSAStartup(MAKEWORD(2,2),&wsaData)){
        cerr<<"WSAStartup failed."<<endl;
        exit(1);
    }
    
	int sum=0;
	int value;
	
	while(cin>>value){
		sum+=value;
	}
	cout<<"Sum is: "<<sum<<endl;
    
    WSACleanup();
    return 0;
}